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Retrofit of Medium Voltage Circuit Breakers

Price	Hubungi Kami
Quantity Order:
Payment Method	Telegraphic Transfer (T/T)
Pack. & Delivery	1 unit
Origin	Czech Republic

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Specification

Retrofit of Medium Voltage Circuit Breakers provides an economical solution to the replacement and upgrading of obsolete air breakers. Directly replacing the worn or obsolete air breaker with a new retrofitted vacuum breaker provides exacting mechanical and electrical interchangeability.

CV. Trikarya Mandiri has more than 20 years of experience on this particular field. Retrofit provides many advantages:

Direct replacement with minimal downtime. The breaker is complete and ready for immediate insertion into existing switchgear cubicle.

Extends useful life of present switchgear. The majority of wear considerations of switchgear is related to the draw out breaker, which encompasses the interrupters, primary bushings, and operating mechanism. By replacing the air breaker and inspection of the switchgear cubicle, the useful life span of the switchgear can be greatly extended.

No disassembly of existing cables and wiring. As the breaker is a direct replacement, replacement of the racking mechanism and secondary disconnect on the cubicle are not required, minimizing cost and down time.

Interrupting the arc in vacuum. This eliminates the need for large, heavy and expensive arc chutes. Arc interruption in vacuum does not produce hot ionized gases or other arcing byproducts because the main contacts are confined to a sealed bottle, making it a safer breaker.

Eliminates asbestos arc chute. The new retrofitted breaker eliminates personnel exposure to asbestos fibers, commonly present in air breakers.

Improved interrupting rating time. The average interrupting time for Medium Voltage Air Breakers is 6 to 8 cycles. Later production breakers were 5 cycles. By converting to vacuum breaker, the average interrupting time for the new retrofit breaker can be improved to 3 to 5 cycles.

Better performance and lower maintenance costs. Vacuum breakers are generally simpler in design and have less powerful operating mechanism that tend to have longer, more trouble free life than their air break counterparts. Some vacuum breakers have no suggested maintenance below 10, 000 no-load operations, 5, 000 load operations, and 15 full rated fault current operations. Also, retrofit helps to avoid the difficulty of finding spare parts for obsolete air breakers, improving the reliability of the complete switchgear.

Tested to applicable standards. Each breaker is required to go through a testing protocol that include electrical and mechanical operations, BIL, High Potential, Vacuum Bottle Integrity, Insulation Resistance ( HT ITALIA) , Contact resistance ( DUCTOR) , Dissipation Factor, Min/ Max control voltage, anti-pump function and Time Travel Analysis. The facilities of CV. Trikarya Mandiri have all the testing capabilities to perform each of the mentioned tests.

Experienced Personnel. Every one of the retrofit projects are Engineered and performed by personnel with years of experience in this particular field. CV. Trikarya Mandiri ensures excellent mechanical and electrical performance of the retrofitted breakers and allows us to offer one ( 01) year warranty on parts and labor.